国外某桥梁工程坐标系建立的过程分析

Analysis on Process of Establishing Engineering Coordinate System for a Foreign Bridge

摘要:

以国外某大型桥梁的建设为案例，通过地图投影的变形值计算，分析了使用UTM投影坐标系带来的精度误差，由此阐述了UTM投影和横轴墨卡托投影在工程中的适用性，重点说明了建立工程坐标系的步骤、方法以及精度验证过程，同时给出了工程坐标系与UTM坐标系的坐标转换方法，供国外类似的工程项目参考。

Abstract:

Taking the construction of a foreign large-scale bridge as a case, through the calculation of deformation value of topographic map projection, the accuracy error caused by using UTM projection coordinate system is analyzed. Therefore, the applicability of UTM projection and transverse Mercator projection in engineering is expounded. The steps, methods and accuracy verification process of establishing the engineering coordinate system are emphatically explained. At the same time, the coordinate transformation method of engineering coordinate system and UTM coordinate system is given, which can be referenced for the similar foreign engineering projects.